ORA_Tweet allows you to call the Twitter API from within an Oracle database. It uses the UTL_HTTP API within Oracle to call the update_status API. It is written completely in PL/SQL. The API supports proxies and short URLs.

TweetBox.fx is a Twitter desktop client. It lets users send updates, replies, and direct messages. Users can retrieve their friend's timeline, their own timeline, direct messages, replies, and their favorites. TweetBox also allows the user to view multiple timelines at the same time. TweetBox has a very user friendly entry box for typing updates. It shows you how many characters are left and provides a very easy-to-use URL-shrinking function. TweetBox can also detect links to pictures on Mobypicture and TwitPic and respond by showing, instead of the original URL, a link labeled "picture" that pops up a thumbnail when the mouse hovers over it.

cheekdotcom tweet is a command-line client for Twitter. It allows you to update your status and include pictures in status updates. It can also display the general public timeline, your friends' public timelines, or your own public timeline.

Lifesaver is a GNOME Screensaver that displays recent posts about Ubuntu on Twitter, Identi.ca, and FriendFeed. Since it performs automated searches of various unfiltered Internet resources, you may encounter language and opinions that are offensive to those of a sensitive disposition, or inappropriate in a workplace environment.

VyperBlog is an all-in-one site template for the Google App Engine. It is meant for small businesses or enterprises that want to get into the Google cloud using a turn-key solution that provides security and safety for the data being stored in the back-end database. VyperBlog provides protection from hackers and crackers who might want to abuse forms and other resources being published by those who are using VyperBlog. VyperBlog employs a unique method for securing sites called Secure-Site.

Crowbar is a desktop social networking application. It views and posts status updates to Twitter and follows. It can unfollow people who are not following you back, but abusing this feature is discouraged.

turses is a console Twitter client with a curses interface. It's based on Tyrs by Nicolas Paris. The goal of the project is to build a full-featured, lightweight, and extremely configurable Twitter client.